uh, the Germans didn't start WWI, and the "final solution" to the "Jewish problem" was not reached until 1941, 8 years after Hitler took power. Hitler did not have the "final solution" ready.
If this is how well you understand extremely well-documented history of WWI and WWII, it is not surprising that you don't understand the position of the Irish.
The Irish don't have anything against "The Jews" (your words, not mine). The Irish were occupied, starved and killed by the British, and have empathy with the Palestinians suffering a similar fate at the hands of the Israelis. It is simple to understand.